Stork Solutions

LMK 387 Stainless Steel Level Transmitter

Introducing the LMK 387 Stainless Steel Probe: your ultimate solution for accurate level and gauge measurement in various environments such as waste water, sludge, and water courses. Designed with mechanical robustness and a flush ceramic diaphragm, this probe ensures effortless disassembly and cleaning during servicing.

With a sleek outer diameter of only 22 mm, the LMK 387 is ideal for seamless installation or retrofitting in 1″ pipes or tight spaces. Need an IS-version (zone 0)? We’ve got you covered.

This versatile probe finds its application in a wide range of sectors, including water management, groundwater and level monitoring, sewage systems, wastewater treatment, water recycling, fuel and oil industries, tank batteries, and biogas plants. Trust the LMK 387 for accurate and reliable measurements in your preferred areas of use.

  • Range: from 1 mH2O up to 100 mH2O
  • Outputs: 4 … 20 mA
  • Main Features: IS-Version Ex ia, diaphragm ceramics 99.9% Al2O3

Product Highlights

The LMK387 Level Transmitter is a versatile and reliable instrument designed for precise pressure measurement in a wide range of applications. It offers a nominal pressure range from 0 to 1 mH2O up to 0 to 100 mH2O, making it suitable for various industrial processes. The output signal is a 2-wire configuration, providing a 4 to 20 mA range, although other output options can be requested. This level transmitter stands out with its compact size, featuring a diameter of only 22 mm. The diaphragm is made of 99.9% Al2O3 ceramics, ensuring excellent durability and resistance to harsh environments. With its good long-term stability, the LMK387 is particularly suitable for wastewater applications. Optional versions of this transmitter include a housing material made of titanium, an IS-version that is intrinsically safe for gas and dust environments, and a drinking water certificate according to DVGW and KTW standards. It also offers a temperature element Pt 100, enabling precise temperature measurement, and can be conveniently mounted with a stainless steel tube. Various cable and elastomer options are available, catering to different installation requirements. Overall, the LMK387 Level Transmitter combines reliability, flexibility, and performance, making it an ideal choice for demanding industrial applications.


  • Water
    • Groundwater and level monitoring
  • Sewage
    • Wastewater treatment
    • Water recycling
  • Fuel and Oil
    • Tank battery
    • Biogas plants 

To download the latest datasheet click here: LMK 387

Additional information


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